Thioplast G 13 Polysulphide polymer Akzo Nobel-Akcros Chemicals Polysulfides SEALANT Thioplast G13 is a liquid Polysulphide-Polymer of high viscosity and of light brown colour Thioplast G 13 is one of the most used used Thioplast-Types for building sealants.Using various fillers, plasticizers and special modifying agents it is possible to adjust the physical properties of Thioplast in order to meet specific application requirements of the building sealants. Polysulphide polymer. Used for building sealants. Offers high viscosity and light brown colour. Can be used in combination with various fillers, plasticizers and special modifying agents.